NGK Spark Plugs: Mercury Outboards

NGK Spark Plugs: Mercury Outboards

348 spark plug applications from NGK's catalogue, for the marine engines we supply parts for. Each line gives the plug NGK specifies, the premium upgrade where one exists, and the electrode gap. Plug codes shown as links go straight to that plug on our shop.

Check the gap before you fit. Plugs are not always gapped correctly out of the box, and the wrong gap causes misfire and hard starting. Where a resistor plug is specified, fit a resistor plug — a non-resistor substitute can interfere with a tacho, sounder or engine electronics.

Mercury 348 applications

Model Engine / details NGK plug Premium upgrade Gap
2.2 HP 2.2 · 84→89 BPR6HS-10 BPR6HIX 1.0 mm
2.5 HP 2.5 · 06→ BPR6HS-10 BPR6HIX 1.0 mm
2.5 HP 2.5 · 93→05 BPR6HS BPR6HIX 0.8 mm
3 HP 3 · 90→92 BPR6HS-10 BPR6HIX 1.0 mm
3.3 HP 3.3 · 93→06 BPR6HS-10 BPR6HIX 1.0 mm
3.5 HP 3.5 · 83→85 BP6HS-10 BPR6HIX 1.0 mm
3.6 HP 3.6 · 80→82 BP7HS-10 BPR7HIX 1.0 mm
3.9 HP 3.9 · 64→66 B6S 0.6 mm
3.9 HP 3.9 · 67→68 B5HS 0.8 mm
4 HP 4 · 40 Gnat · 76→79 BR6HS BR6HIX 0.8 mm
4 HP 4 · 40 · 69→69 B5HS 0.8 mm
4 HP 4 · 80→82 BP7HS BPR7HIX 0.9 mm
4 HP 4 · Dia. 12 mm plug · 4-Stroke · 00→06 DCPR6E 0.9 mm
4 HP 4 · Dia. 14 mm plug · 2-Stroke · 88→06 BPR7HS-10 BPR7HIX 1.0 mm
5 HP 5 · Dia. 12 mm plug · 4-Stroke · 00→06 DCPR6E 0.9 mm
5 HP 5 · Dia. 14 mm plug · 2-Stroke · 88→06 BPR7HS-10 BPR7HIX 1.0 mm
6 HP 6 · 60 12.7 mm reach plugs · 67→68 B6HS BR6HIX 0.8 mm
6 HP 6 · 60 9.5 mm reach plugs · 63→66 B6S 0.6 mm
6 HP 6 · Dia. 12 mm plug · 4-Stroke · 00→06 DCPR6E 0.9 mm
6 HP 6 · Dia. 14 mm plug · 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
6 HP 6 · Dia. 14 mm plug · 2-Stroke · 86→00 BP8H-N-10 BPR8HIX 1.0 mm
7.5 HP 7.5 · 79→85 B9HS-10 BR9HIX 1.0 mm
7.5 HP 7.5 · →69 B6HS BR6HIX 0.8 mm
8 HP 8 · Bodensee Dia. 10 mm plug · 95→02 CR6HS CR6HIX 0.7 mm
8 HP 8 · Dia. 12 mm plug · 4-Stroke · 06→ DCPR6E 0.9 mm
8 HP 8 · Dia. 14 mm plug · 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
8 HP 8 · Dia. 14 mm plug · 2-Stroke · 86→00 BP8H-N-10 BPR8HIX 1.0 mm
9.8 HP 9.8 · 100, 110 9.5 mm reach plugs · 60→66 B6S 0.6 mm
9.8 HP 9.8 · 110 12.7 mm reach plugs · 67→69 B7HS BR7HIX 0.8 mm
9.8 HP 9.8 · 79→85 B9HS-10 BR9HIX 1.0 mm
9.9 HP 9.9 · 2-Stroke · 01→06 BPZ8HS-15 1.5 mm
9.9 HP 9.9 · 2-Stroke · 86→94 BP8H-N-10 BPR8HIX 1.0 mm
9.9 HP 9.9 · 2-Stroke · 95→00 BP8HS-15 1.5 mm
9.9 HP 9.9 · 4-Stroke · 06→ DCPR6E 0.9 mm
9.9 HP 9.9 · 4-Stroke · 95→98 CR6HS CR6HIX 0.7 mm
9.9 HP 9.9 · 4-Stroke · 99→02 DPR6EA-9 0.9 mm
10 HP 10 · 10 Sea Pro · 01→02 BPZ8HS-15 1.5 mm
10 HP 10 · 10, 10M Sea Pro · (Excl. RFI) · 91→00 BP8HS-15 1.5 mm
10 HP 10 · 10M, 10ML Sea Pro · RFI BPR7HS-10 BPR7HIX 1.0 mm
10 HP 10 · 10ML Sea Pro · (Excl. RFI) · 91→00 BP8HS-15 1.5 mm
10 HP 10 · XR10 · 92→98 BP8HS-15 1.5 mm
15 HP 15 · 150 · 60→61 B6S 0.6 mm
15 HP 15 · 15M, 15ML · RFI · 95→96 BP8HS-10 BPR8HIX 1.0 mm
15 HP 15 · Bigfoot · 4-Stroke · 98→06 DPR6EA-9 0.9 mm
15 HP 15 · Sea Pro · 2-Stroke · 01→06 BPZ8HS-15 1.5 mm
15 HP 15 · Sea Pro · 2-Stroke · 95→96 BP8HS-10 BPR8HIX 1.0 mm
15 HP 15 · Sea Pro · 2-Stroke · 97→00 BP8HS-15 1.5 mm
18 HP 18 · 18 XD · 81→85 BP8H-N-10 BPR8HIX 1.0 mm
20 HP 20 · 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
20 HP 20 · 2-Stroke · 86→00 BP8H-N-10 BPR8HIX 1.0 mm
20 HP 20 · 200 · 60→66 B6S 0.6 mm
20 HP 20 · 200 · 67→69 B7HS BR7HIX 0.8 mm
20 HP 20 · Jet · 2-Stroke · 01→02 BPZ8H-N-10 1.0 mm
20 HP 20 · Jet · 2-Stroke · 95→00 BP8H-N-10 BPR8HIX 1.0 mm
20 HP 20 · Sea Pro · 2-Stroke · 01→ BPZ8H-N-10 1.0 mm
25 HP 25 · 250 · 62→ B6S 0.6 mm
25 HP 25 · 25M, 25ML · (Excl. RFI) BP7HS-10 BPR7HIX 1.0 mm
25 HP 25 · 25M, 25ML · RFI BPR7HS-10 BPR7HIX 1.0 mm
25 HP 25 · 25MLRC · 2-Stroke · 98→08 BPZ8H-N-10 1.0 mm
25 HP 25 · 4-Stroke EFI · 06→ DCPR6E 0.9 mm
25 HP 25 · Bigfoot · 4-Stroke · 98→01 DPR6EA-9 0.9 mm
25 HP 25 · Sea Pro · 2-Stroke · 80→00 BP8H-N-10 BPR8HIX 1.0 mm
30 HP 30 · 2-Stroke 3-Cyl. · 01→ BPZ8H-N-10 1.0 mm
30 HP 30 · 300 · 4-Cyl. · 60→ B6S 0.6 mm
30 HP 30 · 4-Stroke 2-Cyl. · 99→02 DPR6EA-9 0.9 mm
30 HP 30 · 4-Stroke 3-Cyl. EFI · 06→ DCPR7E DCPR7EIX 0.9 mm
30 HP 30 · Incl. Jet, Sea Pro · 2-Stroke 2-Cyl. · 01→ BPZ8H-N-10 1.0 mm
30 HP 30 · Incl. Sea Pro · 2-Stroke 2-Cyl. · 95→00 BP8H-N-10 BPR8HIX 1.0 mm
30 HP 30 · Jet · 2-Stroke 3-Cyl. · 98→01 BP8H-N-10 BPR8HIX 1.0 mm
35 HP 35 · 350 12.7 mm reach plugs · 67→69 B7HS BR7HIX 0.8 mm
35 HP 35 · 350 9.5 mm reach plugs · 4-Cyl. · 61→65 B6S 0.6 mm
35 HP 35 · 350 9.5 mm reach plugs · 66→66 B7S 0.6 mm
40 HP 40 · 2-Stroke 3-Cyl. · 01→02 BPZ8H-N-10 1.0 mm
40 HP 40 · 2-Stroke 3-Cyl. · 98→00 BP8H-N-10 BPR8HIX 1.0 mm
40 HP 40 · 4-Stroke 3-Cyl. EFI · 06→ DCPR7E DCPR7EIX 0.9 mm
40 HP 40 · 4-Stroke 4-Cyl. EFI · 06→ DCPR7E DCPR7EIX 0.9 mm
40 HP 40 · 400 · 60→61 B6S 0.6 mm
40 HP 40 · 40ML, 40MLL · (Excl. RFI) BP7HS-10 BPR7HIX 1.0 mm
40 HP 40 · 40ML, 40MLL · RFI BPR7HS-10 BPR7HIX 1.0 mm
40 HP 40 · Bigfoot · 4-Stroke 3-Cyl. · 98→02 DPR6EA-9 0.9 mm
40 HP 40 · Bigfoot · 4-Stroke 4-Cyl. (Excl. EFI) · 01→06 DPR6EA-9 0.9 mm
40 HP 40 · Incl. Sea Pro · 2-Stroke 2-Cyl. · 01→06 BPZ8H-N-10 1.0 mm
40 HP 40 · Incl. Sea Pro · 2-Stroke 2-Cyl. · 95→00 BP8H-N-10 BPR8HIX 1.0 mm
40 HP 40 · Sea Pro · 2-Stroke 3-Cyl. · 95→97 BPR7HS-10 BPR7HIX 1.0 mm
45 HP 45 · 450 · 62→ B6S 0.6 mm
45 HP 45 · Bodensee Dia. 12 mm plug · 4-Cyl. 4-Stroke · 95→02 DPR6EA-9 0.9 mm
45 HP 45 · Jet Dia. 14 mm plug · 3-Cyl. 2-Stroke · 01→02 BPZ8H-N-10 1.0 mm
45 HP 45 · Jet Dia. 14 mm plug · 3-Cyl. 2-Stroke · 95→00 BP8H-N-10 BPR8HIX 1.0 mm
50 HP 50 · (Excl. Big Foot) · 4-Cyl. 4-Stroke · 95→01 DPR6EA-9 0.9 mm
50 HP 50 · 3-Cyl. 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
50 HP 50 · 3-Cyl. 2-Stroke · 91→00 BP8H-N-10 BPR8HIX 1.0 mm
50 HP 50 · 4-Cyl. 4-Stroke EFI · 06→ DCPR7E DCPR7EIX 0.9 mm
50 HP 50 · 500 9.5 mm reach plugs · 61→64 B6S 0.6 mm
50 HP 50 · 500 9.5 mm reach plugs · 65→66 B7S 0.6 mm
50 HP 50 · 500M, 500S (Excl. 500SS) · 67→77 B7HS BR7HIX 0.8 mm
50 HP 50 · Big Foot · 4-Stroke · 95→ DCPR7E DCPR7EIX 0.9 mm
55 HP 55 · ML, MLL Sea Pro · (Excl. RFI) BP7HS-10 BPR7HIX 1.0 mm
55 HP 55 · ML, MLL Sea Pro · RFI BPR7HS-10 BPR7HIX 1.0 mm
55 HP 55 · Sea Pro · 3-Cyl. 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
55 HP 55 · Sea Pro · 3-Cyl. 2-Stroke · 92→00 BP8H-N-10 BPR8HIX 1.0 mm
60 HP 60 · 3-Cyl. 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
60 HP 60 · 3-Cyl. 2-Stroke · 91→00 BP8H-N-10 BPR8HIX 1.0 mm
60 HP 60 · 4-Cyl. 4-Stroke EFI · 06→ DCPR7E DCPR7EIX 0.9 mm
60 HP 60 · 4-Cyl. 4-Stroke · 01→ DPR6EA-9 0.9 mm
60 HP 60 · 6-Cyl. · 60→ B6S 0.6 mm
60 HP 60 · Big Foot · 95→02 BP8H-N-10 BPR8HIX 1.0 mm
60 HP 60 · ML, MLL Sea Pro · (Excl. RFI) BP7HS-10 BPR7HIX 1.0 mm
60 HP 60 · ML, MLL Sea Pro · RFI BPR7HS-10 BPR7HIX 1.0 mm
60 HP 60 · Sea Pro · 3-Cyl. 2-Stroke · 01→02 BPZ8H-N-10 1.0 mm
60 HP 60 · Sea Pro · 3-Cyl. 2-Stroke · 95→00 BP8H-N-10 BPR8HIX 1.0 mm
65 HP 65 · 650 9.5 mm reach plugs · 63→66 B7S 0.6 mm
65 HP 65 · 650S (Excl. 650SS) · 67→67 B7HS BR7HIX 0.8 mm
65 HP 65 · 650SS · 67→71 BUH
70 HP 70 · 700 · 60→61 B6S 0.6 mm
75 HP 75 · 4-Cyl. 4-Stroke DOHC · 00→06 LFR5AP-11 1.1 mm
80 HP 80 · 800 · 6-Cyl. · 60→61 B7S 0.6 mm
80 HP 80 · 800 · 66→68 BU8H
80 HP 80 · Jet · 4-Cyl. 2-Stroke · 01→ BPZ8H-N-10 1.0 mm
80 HP 80 · Jet · 4-Cyl. 2-Stroke · 95→00 BP8H-N-10 BPR8HIX 1.0 mm
85 HP 85 · 850 · 6-Cyl. · 62→64 B7S 0.6 mm
90 HP 90 · 4-Cyl. 4-Stroke DOHC · 00→06 LFR5AP-11 1.1 mm
90 HP 90 · 900 9.5 mm reach plugs · 65→77 B7S 0.6 mm
95 HP 95 · 950 (Excl. 950SS) · 66→ B7HS BR7HIX 0.8 mm
100 HP 100 · 1000 · 62→64 B7S 0.6 mm
100 HP 100 · 88→99 BP8H-N-10 BPR8HIX 1.0 mm
105 HP 105 · Jet · 95→98 BU8H
110 HP 110 · 1100BP (Excl. 1100SS) · 66→ B7HS BR7HIX 0.8 mm
115 HP 115 · 4-Cyl. 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
115 HP 115 · 4-Cyl. 2-Stroke · 89→00 BP8H-N-10 BPR8HIX 1.0 mm
115 HP 115 · 4-Cyl. 4-Stroke EFI, MFI · 01→06 ILFR6J-11K 1.1 mm
115 HP 115 · OptiMax · 6-Cyl. 2-Stroke · 00→02 PZFR5F-11 ZFR5FIX-11 1.0 mm
115 HP 115 · OptiMax · 6-Cyl. 2-Stroke · 03→04 IZFR5G 0.8 mm
125 HP 125 · 4-Cyl. 2-Stroke · 01→06 BPZ8H-N-10 1.0 mm
125 HP 125 · 4-Cyl. 2-Stroke · 94→00 BP8H-N-10 BPR8HIX 1.0 mm
135 HP 135 · 6-Cyl. 4-Stroke EFI Supercharged · 06→ ILFR6B 0.8 mm
135 HP 135 · 86→99 BU8H
135 HP 135 · OptiMax · 6-Cyl. 2-Stroke DFI · 03→06 IZFR5G 0.8 mm
135 HP 135 · OptiMax · 6-Cyl. 2-Stroke DFI · 96→01 PZFR5F-11 ZFR5FIX-11 1.0 mm
140 HP 140 · Jet · 95→99 BU8H
150 HP 150 · 1500 · V6 · 78→97 BU8H
150 HP 150 · 6-Cyl. 2-Stroke EFI · 00→06 BPZ8HS-10 1.0 mm
150 HP 150 · 6-Cyl. 4-Stroke EFI Supercharged · 06→ ILFR6B 0.8 mm
150 HP 150 · EFI · 98→99 BU8H
150 HP 150 · Marathon · 85→88 BU8H
150 HP 150 · OptiMax · 6-Cyl. 2-Stroke DFI · 03→06 IZFR5G 0.8 mm
150 HP 150 · OptiMax · 6-Cyl. 2-Stroke DFI · 96→02 PZFR5F-11 ZFR5FIX-11 1.0 mm
150 HP 150 · XR-2, XR-4, XR-6, XRi · V6 · 85→02 BU8H
175 HP 175 · 6-Cyl. 2-Stroke EFI, MFI · 00→01 BPZ8HS-10 1.0 mm
175 HP 175 · 6-Cyl. 4-Stroke EFI Supercharged · 06→ ILFR6B 0.8 mm
175 HP 175 · OptiMax · 6-Cyl. 2-Stroke DFI · 01→02 PZFR5F-11 ZFR5FIX-11 1.0 mm
175 HP 175 · OptiMax · 6-Cyl. 2-Stroke DFI · 03→06 IZFR5G 0.8 mm
175 HP 175 · V6, EFI · 79→99 BU8H
175 HP 175 · XRi · 91→02 BU8H
200 HP 200 · 26.5 mm reach plugs · EFI · 06→ ILFR6B 0.8 mm
200 HP 200 · 6-Cyl. 2-Stroke EFI · 06→ BR8HS BR8HIX 1.0 mm
200 HP 200 · 6-Cyl. 2-Stroke, Incl. EFI, MFI · 00→06 BPZ8HS-10 1.0 mm
200 HP 200 · Deuce High · EFI · 97→ BUZ8H
200 HP 200 · DFI V6 · 96→97 ZFR6F-11 ZFR6FIX-11 1.1 mm
200 HP 200 · DFI · 97→ PZFR6H 1.0 mm
200 HP 200 · EFI · 98→99 BU8H
200 HP 200 · OptiMax 200XS · 00→04 PZFR5F-11 ZFR5FIX-11 1.0 mm
200 HP 200 · OptiMax · 6-Cyl. 2-Stroke · 03→06 IZFR5G 0.8 mm
200 HP 200 · OptiMax · 6-Cyl. 2-Stroke · 96→02 PZFR5F-11 ZFR5FIX-11 1.0 mm
200 HP 200 · V6 · 79→99 BU8H
200 HP 200 · Verado · 6-Cyl. 4-Stroke · 04→ ILFR6B 0.8 mm
200 HP 200 · XRi · EFI V6 · 00→ BPR7HS BPR7HIX 0.8 mm
200 HP 200 · XRi · V6 · 89→02 BUZ8H
220 HP 220 · V-220 Laser · 87→88 BUZ8H
225 HP 225 · 6-Cyl. 2-Stroke EFI, DFI · 95→06 BR8HS BR8HIX 0.9 mm
225 HP 225 · 6-Cyl. 4-Stroke EFI Supercharged · 06→ ILFR6B 0.8 mm
225 HP 225 · 6-Cyl. 4-Stroke EFI, DFI (Excl. · 06→ LFR5AP-11 1.1 mm
225 HP 225 · 80→81 BU8H
225 HP 225 · DFI · 97→ PZFR5F-11 ZFR5FIX-11 1.0 mm
225 HP 225 · OptiMax (Excl. 225XS) · 6-Cyl. 2-Stroke · 96→04 PZFR5F-11 ZFR5FIX-11 1.0 mm
225 HP 225 · OptiMax · 6-Cyl. 2-Stroke · 06→ IZFR5G 0.8 mm
225 HP 225 · Sea Pro · 6-Cyl. 2-Stroke · 97→02 BR8HS BR8HIX 0.9 mm
225 HP 225 · Sea Pro · V6 · 95→97 BPR7HS-10 BPR7HIX 1.0 mm
225 HP 225 · V6 2-Stroke · 98→01 BR8HS BR8HIX 0.9 mm
225 HP 225 · V6 · 94→97 BPZ8H-N-10 1.0 mm
225 HP 225 · Verado · 6-Cyl. 4-Stroke · 04→ ILFR6B 0.8 mm
225 HP 225 · Work · 94→97 BPZ8H-N-10 1.0 mm
225 HP 225 · Work · 98→ BR8HS BR8HIX 0.9 mm
225 HP 225 · XRi · EFI · 95→02 BR8HS BR8HIX 0.9 mm
245 HP 245 · 95→96 BU8H
250 HP 250 · 6-Cyl. 4-Stroke EFI Supercharged · 06→ ILFR6B 0.8 mm
250 HP 250 · 89→90 BU8H
250 HP 250 · Verado · 6-Cyl. 4-Stroke · 04→ ILFR6B 0.8 mm
250 HP 250 · XRi · V6 EFI 2-Stroke · 95→06 BR8HS BR8HIX 0.9 mm
260 HP 260 · Offshore · 95→97 BU8H
265 HP 265 · SS Drag · EFI · 97→ BU8H
275 HP 275 · 6-Cyl. 4-Stroke EFI Supercharged · 06→ ILFR6B 0.8 mm
275 HP 275 · 84→94 BU8H
275 HP 275 · Verado · 6-Cyl. 4-Stroke · 04→ ILFR6B 0.8 mm
280 HP 280 · F1 · EFI · 97→ BU8H
280 HP 280 · Offshore · 02→ BZ7HS-10 0.8 mm
280 HP 280 · Sport, SS · EFI · 02→ BZ7HS-10 0.8 mm
300 HP 300 · 81→83 BU8H
300 HP 300 · 84→88 BU8H
300 HP 300 · S3000 · EFI · 97→ BU8H
350 HP 350 · Verado · 09→ ILFR6B 0.8 mm
— 1983-1979 BUZHW
100, 110 1966-1960 BR6S 0.6 mm
1000BP, 1000SS 1969-1968 BUZHW
110 1969-1967 BR7HS BR7HIX 0.7 mm
110 1973-1970 BUZHW-2
110 1974 BUZHW
110 1978-1975 BUZHW-2
1100 1966 BR7HS BR7HIX 0.7 mm
1100SS 1967-1966 BUZHW
115, 1150 1988-1970 BUZHW
1250 BP, SS 1969-1968 BUZHW
1350 1971-1970 BUZHW
140 1980-1979 BUZHW
1400 1978-1970 BUZHW
150 1961-1960 BR6S 0.6 mm
150 MAGNUM BUZHW
1500 1977-1973 BUZHW
1750 1978-1976 BUZHW
2.0L F1 CARB/EFI BUZHW
2.4L BASS BUZHW
2.4L EFI BUZHW
2.4L MOD VP BUZHW
2.5L CARB 1993-1991 BUZHW
2.5L EFI 1997-1994 BUZHW
20, 200 1980-1970 BUZHW-2
200 1966-1960 BR6S 0.6 mm
200 1969-1967 BR7HS BR7HIX 0.7 mm
200 MAGNUM EFI BUZHW
200 SST, EFI, SS, XR2 1997 BUZHW
2000 1978 BUZHW
200XS SST, RACING 2-STROKE IZFR7M 0.8 mm
21.9 CU IN 25SS BUZHW
225 MAGNUM EFI BUZHW
250 1962 BR6S 0.6 mm
25SS BUZHW-2
25XD, 2-STROKE 2000-1980 BUHW
25XS BUZHW
30 1997-1995 BUZHW-2
300 1960 BR6S 0.6 mm
35 1991-1984 BUZHW
350 1969-1967 BR7HS BR7HIX 0.7 mm
39 1966-1964 BR6S 0.6 mm
39 1968-1967 BR5HS 0.6 mm
4 1982-1980 BPR7HS BPR7HIX 0.7 mm
4 1987-1986 BUZHW-2
4.5 1985-1975 BUZHW-2
40 1969 BR5HS 0.6 mm
40 1974-1970 BUZHW-2
40 1997-1988 BUZHW-2
40, 400, 402 1983-1970 BUZHW
400 1961-1960 BR6S 0.6 mm
44XS BUZHW-2
45 1989-1986 BUZHW-2
450 1962 BR6S 0.6 mm
49.9 CU IN 650X BUZHW
50 1990-1986 BUZHW
50, 500 1985-1978 BUZHW-2
500, 500SS 1977-1967 BUZHW
500M, 500S 1967 BR7HS BR7HIX 0.7 mm
60 1966-1963 BR6S 0.6 mm
60 1968-1967 BR6HS BR6HIX 0.7 mm
60 1990-1984 BUZHW
600 1960 BR6S 0.6 mm
65 JET 2002-1995 BUZHW-2
650 1976-1972 BUZHW
650S 1967 BR7HS BR7HIX 0.7 mm
650S 1971-1968 BUZHW
70 1989-1987 BUZHW-2
700 1961-1960 BR6S 0.6 mm
700 1978-1977 BUZHW
75 1969 BR6HS BR6HIX 0.7 mm
75 1973-1970 BUZHW-2
75 1974 BUZHW
75 1978-1975 BUZHW-2
75 2006-2001 BUZHW-2
75 JET 2001 BUZHW-2
75, SEA PRO 2000-1987 BUZHW-2
75XD 1986-1984 BUZHW-2
80 1983-1979 BUZHW-2
80 1989-1987 BUZHW-2
800 1972-1969 BUZHW
800 1978 BUZHW-2
850 1977-1973 BUZHW
90 2006-1987 BUZHW-2
90900 1986-1978 BUZHW
950 1966 BR7HS BR7HIX 0.7 mm
950SS 1967-1966 BUZHW
99.9 CU IN TWISTER 11-X BUZHW
All models 10X BP8HS-10 BPR8HIX 1.0 mm
All models Drag, S3000 · Incl. RFI 2507cc BU8H
F1 EFI 1997 BUZHW
FOURSTROKE 100, 1.7L, SERIAL 1B366823 AND UP LFR4A-E 0.8 mm
FOURSTROKE 115, 1.7L, SERIAL 0T178500-1B366822 LFR6A-11 LFR6AIX-11 1.1 mm
FOURSTROKE 115, 1.7L, SERIAL 1B366823-2B094995 LFR4A-E 0.8 mm
FOURSTROKE 115, SEAPRO, PRO XS, 1.7L, SERIAL 2B095049 AND UP ZFR5F 0.8 mm
FOURSTROKE 135, 4-CYL EFI ZFR5F 0.8 mm
FOURSTROKE 150, SEAPRO, 4-CYL EFI ZFR5F 0.8 mm
FOURSTROKE 225, SERIAL # 0T653945 AND UP LFR5A-11 LFR5AIX-11 1.1 mm
FOURSTROKE 30, 3-CYL EFI DCPR7E DCPR7EIX 0.8 mm
FOURSTROKE 40, BIGFOOT, 3-CYL EFI DCPR7E DCPR7EIX 0.8 mm
FOURSTROKE 40, JET, SEAPRO, 4-CYL EFI DCPR7E DCPR7EIX 0.8 mm
FOURSTROKE 50, BIGFOOT, 4-CYL EFI DCPR7E DCPR7EIX 0.8 mm
FOURSTROKE 60,BIGFOOT, SEAPRO, FORMULA 60, 4-CYL EFI DCPR7E DCPR7EIX 0.8 mm
FOURSTROKE 65 JET, 4-CYL EFI ZFR5F 0.8 mm
FOURSTROKE 75 SEAPRO, 4-CYL EFI ZFR5F 0.8 mm
FOURSTROKE 75, 1.7L, SERIAL 1B366823 AND UP LFR4A-E 0.8 mm
FOURSTROKE 75, BODANESE, 1596CC, SERIAL 0G960500-1B366822 LFR5A-11 LFR5AIX-11 1.1 mm
FOURSTROKE 80 JET, 4-CYL EFI ZFR5F 0.8 mm
FOURSTROKE 80, 1.7L, SERIAL 1B366823 AND UP LFR4A-E 0.8 mm
FOURSTROKE 90 SEAPRO, 4-CYL EFI ZFR5F 0.8 mm
FOURSTROKE 90, 1.7L, SERIAL 1B366823 AND UP LFR4A-E 0.8 mm
FOURSTROKE 90, 1596CC, SERIAL 0G960500-1B366822 LFR5A-11 LFR5AIX-11 1.1 mm
OPTIMAX 1.5L 2011-2010 IZFR5J 0.8 mm
OPTIMAX 115, PRO XS, 1.5L DFI IZFR5J 0.8 mm
OPTIMAX 125, 1.5L DFI IZFR5J 0.8 mm
OPTIMAX 150XS PRO, 2.5L SERIAL # 1B690542 AND UP IZFR6J 1.0 mm
OPTIMAX 175XS PRO, SERIAL # 1B516339 AND UP IZFR6J 1.0 mm
OPTIMAX 200, DFI IZFR5G 0.8 mm
OPTIMAX 200XS, 2.5L DFI IZFR5G 0.8 mm
OPTIMAX 225, 3.0L DFI IZFR5G 0.8 mm
OPTIMAX 225XS PRO, SPORT XS, XS IZFR6J 1.0 mm
OPTIMAX 250, SERIAL # 1B528615 AND UP IZFR6J 1.0 mm
OPTIMAX 250XS PRO, SPORT XS, 250XS, 2.5XS IZFR6J 1.0 mm
OPTIMAX 3.0L DSI, DIESEL SPARK IGNITION IZFR6J 1.0 mm
OPTIMAX 3.0L DTS IZFR5G 0.8 mm
OPTIMAX 3.0L PRO XS, 3.0L DFI IZFR6J 1.0 mm
OPTIMAX 300XS 3.2L DFI "STROKER", RACING 2-STROKE IZFR7M 0.8 mm
OPTIMAX 300XS EFI IZFR5J 0.8 mm
OPTIMAX 75, 1.5L DFI IZFR5J 0.8 mm
OPTIMAX 80 JET, 1.5L 3-CYL DFI IZFR5J 0.8 mm
OPTIMAX 90, 1.5L DFI IZFR5J 0.8 mm
OPTIMAX JP 3.0L, MULTI-FUEL ENGINE IZFR6J 1.0 mm
OPTIMAX V-115, DFI IZFR5G 0.8 mm
OPTIMAX V-135, 2.5L DFI IZFR5G 0.8 mm
OPTIMAX V-150, 2.5L DFI IZFR5G 0.8 mm
OPTIMAX V-175, 2.5L DFI IZFR5G 0.8 mm
SST 140 BUZHW
VERADO 135, 4-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 150, 4-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 175, 4-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 200, PRO VERADO, 4 & 6 CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 225, 6-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 250, PRO VERADO, 6-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 275, 6-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 300, PRO VERADO, 6-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 350, PRO VERADO, Sci, 6-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
VERADO 400, 6-CYL SUPERCHARGED EFI ILFR6G-E 0.8 mm
XR-2 MAGNUM BUZHW

Reading the plug codes

An NGK code describes the plug's construction. The digit in the middle is the heat rating — a higher number is a colder plug, which is the opposite of most other brands. An R after the first letters means a resistor plug. Codes ending IX are the Iridium IX range and G or GP the platinum ranges, both direct upgrades with a finer centre electrode. A Y- prefix is a diesel glow plug, not a spark plug, and has no gap. Where NGK specifies the solid-terminal build of a plug we show the base code, which is the one we stock — tell us if your leads need the solid-terminal version.

Do not substitute a hotter or colder plug to cure a running problem. A plug reading the wrong colour is telling you about the fuel, ignition or oil — changing heat range hides it rather than fixing it.

Other engines

Not sure which plug you need?

Model families ran across several specifications and the year or serial usually decides which line applies. Ring 0412 532 984 with your engine and serial number and we will confirm the plug, the gap and how many you need. Our other workshop charts are on the reference charts page.